CVE-2021-37211 Larvata Digital Technology Co. Ltd. FLYGO - Stored XSS

Medium 5.4 Published 9 Aug 2021 Updated 16 Sep 2024

Remote attackers can inject JavaScript into the Flygo bulletin function, enabling stored XSS attacks against other users.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: A user has to click or open something
Fix: None listed

What is CVE-2021-37211?

CVE-2021-37211 is a medium-severity cross-site scripting vulnerability in Larvata Digital Technology Co. Ltd. FLYGO, published on 9 Aug 2021. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

Official description

The bulletin function of Flygo does not filter special characters while a new announcement is added. Remoter attackers can use the vulnerability with general user’s credential to inject JavaScript and execute stored XSS attacks.

Weakness: CWE-79

Which versions are affected by CVE-2021-37211?

It affects 1 product.

Products include Larvata Flygo.

How do I fix CVE-2021-37211?

No fix has been published for CVE-2021-37211 yet. Limit exposure of the affected software until one is available.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2021-37211 being exploited?

There is no known exploitation of CVE-2021-37211 in the wild and no public exploit code.

Sources

Also known as GHSA-wgqq-h84j-p8mg.